Micha
Janitor
Keeps his head down and does his job.
Twitchy from the experiments on him.
Subservient but secretly stealing supplies from the labMown down by a machine gun

Yuri Bourda
Scientist with a secret
Friend of SergeiShot through the head

Dmtri
Young, ultra-communist guard
Willing to defy his superior, Michael, when Pavel is around
Clapped in irons
Rivalry with Vasily
Rivalry with Piotr
Rivalry with Boris
Lover of Natasha DiedPavel
Political commissar, hates Americans
Trying to undermine the camp commander
Rivalry with NataliaMachine-gunned to death

Sergei
Scientist willing to do anything for a discovery
Lover of Natasha
Rivalry with Michael
Friendly with YuriInjected himself with fake serum

Leon
Camp weatherman
Nervous and prone to crying wolfCrushed under the armoury wallBoris Karazak
Good-hearted scientist
Rivalry with Dmitri (over Natasha)Shot through the head

Natalia
NKVD agent sent to keep tabs on the gulag and its lab
Secret alcoholicBeaten to death while trying to escape in a plane

Vasily
Huge brute of a man with massive upper body strength
Rivalry with Dmitri
Friendship with PiotrKnifed to deathMichael Dovok
Commander of the camp
Rivalry with SergeiDefeated the killer in a fake out then killed while radioing for help